Henry f



(No Model.)

- H. P. HERBERT.

PUMP. No. 496,653. Patented May 2, 1893.

nb IIJQSSES THE NQRRIG PETERS C0., PHOYD-THO., WASHINGTON, D. CA

i'UNITED STATES 'PATENT OFFICE.

HENRY F. HERBERT, OF ROCK POINT, PENNSYLVANIA.

PUMP.

SPECIFICATION forming part of Letters Patent No. 496,653, dated May 2,1893.

Application led September 17, 1891. Serial No. 405,997. (No model.)

To all whom it may concern; Y Be it known that I, HENRY F. HERBERT, acitizen of the United States, residing at Rock Point, in the county ofBeaver and State of Pennsylvania, have invented a new and useful Pump,of which the following is a speciiication. l

This invention relates to improvements in mining, steam and water pumps;and to that particular class thereof known as double-acting, andembodying but one pump-cylinder.

The objects of the invention are to provide apump'of this class of cheapand simple construction, the parts of which may be readily detached forthe purpose of cleaning, and are accessible, the check-valves at theends of the cylinder being located adjacent to couplings and out of thebody of the cylinder whereby when the packing-box and plunger areremoved the cylinder is open from end to end.

With the above objects in view the invention consists in certainfeatures of construction that will be hereinafter set forth andparticularly pointed out in the claim.

Referring to the drawingsz-Figure 1 is a vertical longitudinal sectionof a pump constructed in accordance with my invention. Fig. 2 is anenlarged detail of one of the valves employed atthe inlet openings. Fig.3 is a similar view of a portion of a pump-rod and valved headforoperating at opposite sides of the discharge.

Like numerals of reference indicate like parts in all the figures of thedrawings.

1 designates the vertically located pumpcylinder, which is provided atits center with a discharge 2, from which extends an ordinary elbowadapted to be connected with the horizontal discharge-pipe. The upperend of the cylinder has threaded therein a stuffing-box 8, through whichdescends the reciprocal pl-unger or pump-rod 4.' At opposite sides ofthe discharge 2 and equidistant therefrom suitably-packed plunger-heads5 are secured to the rod, said heads being provided with a series ofports 6, extending through the same. Below the upper head and above thelower head there are mounted at these points valves 7, the same beingdesigned to reciprocate upon the rod between their respective heads andcollars 8 formed on the rods immediately below and above the heads, andserving as stops parts of the valves takes place iiaii ascenth of theplunger.

The pump cylinder is tubular and may be formed of a straight section ofpipe, provided at one end (its upper end) witha female screw to engagethe stuiiing-box, and provided at the opposite or lower end with a malescrew to engage the interior thread of a coupling 1% The cylinder isprovided near its upper end with a side opening 1J, and secured to thecylinder and communicating with this opening is an elbow 11 in which isfitted a check-valve 19 comprising a perforated body-portion 12, astem`l3, and a slidable disk 14 to close the perforations. Removablytted in the coupling 1' is acheck-valve 21, comprising the perforatedbody-portion 8X, the stem 9,' and the slidable disk 10. j

16 represents a tubular supply-chamber, which is fitted at its upper endin the coupling 20, by which it is connected to the free y end of theelbow 11, and provided at its lower end with a semicircular integralelbow 18 whose free terminal is threaded into the lower end of thecoupling 1a. The supply pipe 17 is connected to the supply chamber at anintermediate point.

From the above description it will be obvious that when the stuffing-boxand the plunger are removed the entire'cylinder will be freefromobstruction,withoutremoving either check-valve. Furthermore,eithercheck-valve 9e may be removed from thepump for repair or otherpurpose by loosening one of the couplings 1u -or 20. Furthermore, intheconstruction described, the minimum number of joints or couplings isemployed and unnecessary angles are avoided as offering obstructions tothe free passage of the fluid and for the accumulation of dirt,sediment, dac.

In pumps Ywhich are employed in the operation of draining mines, &:c.,it is desirable to avoid complications, such as joints, and to providemeans whereby the cylinder may be opened for cleaning, and whereby thevalves may be readily reached, and it is believed ICO.

that these desiderata have been attained in the above-described device.

The operation of the improved pump will be understood Without a detaileddescription thereof.

Having described my invention, what I claim 4is In a pump of the classdescribed, the combination of a cylinder,1,constructed of a singlestraight pipe having open ends, an intermediate lateral discharge pipe,2, a cap and stuffing-box, 3, threaded into the upper end of thecylinder, a tubular supply cylinder, 16, arranged parallel with andadjacent to the cylinder, 1, and provided at its lower end with anintegral rounded or semicircular elbow, 18,

whose free end is aligned axially with the cylinder, 1, a right-angle orquarter-circular elbow, 11, connected at one end to the cylinder,

1, and aligned at the other end with the supplyicylinder, a coupling,20, engaging the eX- teriorly threaded adjacent terminals of thesupply-cylinder and the elbow, 11, a checkvalve arranged in the elbow,11, a supply-pipe communicating with the supply-cylinder, a coupling, 1,threaded upon the adjacent ends of the cylinder, 1, and elbow, 18, acheck-valve arranged in the coupling, la, and a double plunger havingits rod mounted in said stuifing-box, substantially as specified.

In testimony that I claim the foregoing as my own I `have hereto affixedmy signature in the presence of two witnesses.

y HENRY F. HERBERT.

Witnesses:

S. E. MARTIN,

B. A. LEHMANN.

